Leonardo da Vinci is credited with saying, "Water is the driver of Nature." It couldn't ring more true. Here is to all the people who have, do, and will advocate for clean water around the world -- from river restoration to ocean conservation, from providing fresh water for all to designing intelligent solutions for future water supplies. We thank you.

We also thank Jenny Beaver for this beautiful addition to the TreeHugger Flickr group. Do you want your photo of the great outdoors featured on TreeHugger? Join the TreeHugger Photo Pool on Flickr and add your photos to the group!